What do you do when you’re middle-aged, and the internal alarm goes off at 0400 on a Saturday morning? After a massive infusion of coffee, I headed to the Shamanic Reloading Cave to mount my new Hornady Concentricity Tool.

By the time KYHillChick was up, I had it all fixed up on its own moveable carrier. I had tested some 30-06 for the Hawkeye in it and found similar results to the 8X57– overall not bad. I measured .001″ to .004″ with a couple of flyers. Adjustments knocked that down to a max runout of .002″ This is significant because the 8X57 had been done with Lee Collet Dies. The 30-06 had been full-length resized with a standard RCBS 2-die set– the same one that I’ve been using for 19 years.

I then tried some .223 REM that I’d done up on the Hornady LNL Progressive. Those showed a bit more overall runout (.002″ to .004″) This wasn’t quite there for target shooting, but I’d done this batch up for general blasting and plinking. I doubt I’d notice a difference.

Bottom line:

1) Yes, the Hornady LNL Concentricity Tool works.
2) I haven’t seen big problems with any of my loads so far so that probably means my habits are sound. That is a huge relief in and of itself.
3) Will adjusting the runout do anything? Probably not as far as hunting success.
4) Was it worth $90? I’d say so.
5) Runout-wise there was not an appreciable difference between the Lee Collet neck sizer and the RCBS full-length resizer at least as far as this tool is concerned.

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